Film-guide for motion-picture cameras.



C. E. AKELEY.

FILM GUIDE FOR MOTION PICTURE CAMERAS.

APPLICATION FILED OCT-12 1-916.

1,297,532. Patented Mar. 18, 1919. I

UNITED STATES PATENT onmon.

' CARL E. AKELEY, OF NEW YORK, N. Y., ASSIGNOR '10 AKELEY CAMERA, INC.,OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

FILM-GUIDE FOR MOTION-FICTURE CAMERAS.

Original application filed April 27, 1916, Serial No. 93,929. Dividedand this ap 1916. Serial No. 125,195.

To all whom it may concern:

Be it known that I, CARL E. AKELEY, a citizen of the United States,residing at New York, borough of Manhattan, city of greater New York,and Stat-e of New York, have invented certain new and" usefulImprovements in Film-Guides for Motion-Picture Cameras, of which thefollowing is a specification.

My invention relates to motion picture cameras of that typedisclosed-in'an appl cation for Letters Patent, filed by me April 27,1916, Serial No. 93,929, of which the present application is a division.

v The object of the present invention is to provide means for causingthe film 1n its passage past the point of exposure to, be

bowed slightly to the "rear, whereby the gelatinized front surface ofthe film will be kept out of contact with the film guide.

In the accompanying drawing Figure 1 is a rear elevation of my improvedfilm guide detached from the camera casing.

Fig. 2 is a vertical transverse sectional view taken on the line IIII ofFig. 1. Fig. 3 is a view similar to Fig; 2, taken on the line III-III ofFig. 1.

Fig. 4 is a transverse sectional view takenon the line IVIV of Fig. 2.-

Similar numerals of reference denote corresponding parts in the severalviews.

In the said drawing, the reference numeral 1 denotes a film guideadapted to be fastened detachably in the casing of a camera of the typedisclosed in my application for Letters Patent .hereinbefore referredto, said film guide being disposed back of the lens. of said' casing.Said film guide comprises side plates 2 curved along their front edgesto conform to the contour of the interior of the camera casing, and aback plate 3, which is apertured centrally to permit the taking ofpictures, it being understood that the film passes downwardly along therear Specification of Letters Patent.

plieation filed October 12,

I oosely mounted in the back plate 3 on each side of the exposureaperture therein are vertic ally disposed presser plates 8, the samebeing retained yieldably' in position by Patented Mar. 18, 1919.

means of springs 9 fixed t-o the'side plates 2, and being so disposed asto register with the perforated edges of the film. Also mounted above"and below the exposure aperture in the back plate 3, in horizontal slotstherein, are anti-friction rollers 10, the same being spring pressed tooperative position.

by means of sprmgs 11, in a manner readily understood The vertical edgesof the film guide gate 5 along theirinner surfaces are curved slightlyat 12, as best seen in Fig. 4, and the presser plates 8 are similarlycurved, the result being that the vertical I edges of the film 13passing therebetween' are correspondingly curved, which'causes arearward projection of the body of the film that maintains itsungelatinized back face in con tact with the guide-gate 5, and itsgelatinized front face away from the back plate 3, thereby preventingaccidental scratching of said front face.- And in the event that thereis any slight contact of the front face of the film,-this is receivedupon the antifri'ctionrollers 10' and the scratching minimized. I

While I have shown and described my improved device as applied to acamera of the type described in my application hereinbefore referred to,it is obvious that my improved mechanism may be applied to cam-' eras ofdifferent constructions.

Having thus described my invention, what I claim as 'new and desire tosecure by Letters Patent, is

1. In a motion icture camera, the combination with the ffim and onopposite sides of the field of exposure, of guides between which theedges of the film pass, said guides forming curved paths to impart acorresponding curvature to the edges only of the film while causing the.intermediate portions to be projected in a plane away from the ens.

2. In a motion picture camera, the combination with the film and onopposite sides film while projectingthe intermediate portion of thefield of'exposure, of guides between which the edges of the film pass,said guides in a plane away from the lens, anti-friction v rollersdisposed in front of the film and adapted to receive any contact on thatside from the film, and springs for maintaining said rollers inposition.

3. In' a motion picture camera, a film guide, resiliently mountedpresser plates therein adapted to engage the edges of the film, theengaging faces of said plates being convexed, a guide gate disposed inthe rear of said film guide and having faces curved correspondingly tothe curvature of said therefrom on that side, and springs formaintaining said rollers resiliently in position,

In testimony whereof I hereunto set my hand this "12th day of September,1916.

CARL E. AKELEY.

